<!DOCTYPE html>
<html>

	<head>
		<meta charset="utf-8" />
		<title>DOM操作-练习</title>
		<style type="text/css">
			body {
				font-size: 13px;
				line-height: 25px;
			}
			
			table {
				border-top: 1px solid #333;
				border-left: 1px solid #333;
				width: 300px;
			}
			
			td {
				border-right: 1px solid #333;
				border-bottom: 1px solid #333;
			}
			
			.center {
				text-align: center;
			}
		</style>
		<!-- 179000646 唐渝 -->
		<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.js"></script>
		<script>
			function addRow() {
				$("#row3").after('<tr><td>幸福从天而降</td><td class="center">&yen;18.50</td></tr>')
			}

			function updateRow() {
				$("#row1").css({"font-weight":"bold","text-align":"center","background-color":"#00ff00"})
			}

			function delRow() {
				$("tr:eq(2)").remove();
				
			}

			function copyRow() {
				$("#myTable").append($("#row3").clone(false,true));
			}			
		</script>
	</head>

	<body>
		<table border="0" cellspacing="0" cellpadding="0" id="myTable">
			<tr id="row1">
				<td>书名</td>
				<td>价格</td>
			</tr>
			<tr id="row2">
				<td>看得见风景的房间</td>
				<td class="center">&yen;30.00</td>
			</tr>
			<tr id="row3">
				<td>60个瞬间</td>
				<td class="center">&yen;32.00</td>
			</tr>
		</table>
		<input name="b1" type="button" value="增加一行" onclick="addRow()" />
		<input name="b2" type="button" value="删除第2行" onclick="delRow()" />
		<input name="b3" type="button" value="修改标题样式" onclick="updateRow()" />
		<input name="b4" type="button" value="复制最后一行" onclick="copyRow()" />

	</body>

</html>